<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <script src="./vue.js"></script>
    <title>vue 1.0 源码实现</title>
  </head>
  <body>
    <div id="app">{{counter}}</div>
    <script>
      const app = new Vue({
        el: "#app",
        data: {
          counter: 0,
        },
      });
      setInterval(() => {
        app.counter += 1;
      }, 1000);
    </script>
  </body>
</html>
